Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 79 · 40 questions

Remember (Push, flow, resist): Voltage → volts (V), current → amperes (A), resistance → ohms (Ω), power → watts (W). milli (m) = ÷ 1000 and kilo (k) = × 1000: 250 mA = 0.25 A, 2.2 kΩ = 2200 Ω. Voltmeter across a part; ammeter in series.

1. 1.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
2. 2.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) a bigger tank (d) the water pressure
3. 3.📏 How many watts (W) is 2.1 kW?
4. 4.True or false: energy used each second is measured in volts (V). (a) True (b) False
5. 5.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
6. 6.📏 Which unit measures current? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
7. 7.📏 How many amperes (A) is 2580 mA? =
8. 8.📏 How many watts (W) is 0.2 kW?
9. 9.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
10. 10.📏 How many kilo-ohms (kΩ) is 6600 Ω? =
11. 11.Which of these is measured in watts (W)? (a) voltage (b) the flow of charge (c) power (d) the push of a cell
12. 12.True or false: current is measured in amperes (A). (a) False (b) True
13. 13.Which of these is measured in ohms (Ω)? (a) energy used each second (b) the flow of charge (c) current (d) how much a part resists
14. 14.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
15. 15.📏 How many kilowatts (kW) is 900 W? =
16. 16.📏 How many amperes (A) is 1690 mA? =
17. 17.True or false: the ammeter measures current. (a) False (b) True
18. 18.True or false: how much a part resists is measured in volts (V). (a) False (b) True
19. 19.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 1000 (c) 100 (d) 60
20. 20.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
21. 21.📏 How many milliamperes (mA) is 0.77 A?
22. 22.True or false: power is measured in watts (W). (a) False (b) True
23. 23.True or false: resistance is measured in ohms (Ω). (a) False (b) True
24. 24.True or false: energy used each second is measured in watts (W). (a) True (b) False
25. 25.📏 How many kilo-ohms (kΩ) is 5500 Ω? =
26. 26.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
27. 27.📏 How many amperes (A) is 640 mA? =
28. 28.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
29. 29.True or false: the voltmeter measures voltage. (a) True (b) False
30. 30.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
31. 31.📏 How many milliamperes (mA) is 2.49 A?
32. 32.Which of these is measured in volts (V)? (a) the push of a cell (b) energy used each second (c) current (d) power
33. 33.Which of these is measured in amperes (A)? (a) voltage (b) resistance (c) the flow of charge (d) energy used each second
34. 34.True or false: the voltmeter measures current. (a) True (b) False
35. 35.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
36. 36.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
37. 37.Which of these is measured in volts (V)? (a) resistance (b) how much a part resists (c) voltage (d) the flow of charge
38. 38.True or false: the voltmeter is joined in series. (a) True (b) False
39. 39.📏 How many ohms (Ω) is 5.9 kΩ?
40. 40.Which of these is measured in ohms (Ω)? (a) power (b) current (c) resistance (d) energy used each second

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